System for displaying on a first moving object a position indication dependent on a position of a second moving object

1. A system for displaying on a first moving object a position indication dependent on a position of a second moving object, said system comprising: a measurement device that carries out at least one position measurement and is arranged exclusively on the first moving object, said measurement device comprising a first element which is configured to carry out a first position measurement, corresponding to the actual position of said first moving object; a processing device mounted on said first moving object and connected to said measurement device, said processing device determining a characteristic position which is fixed; a display device mounted on said first moving object, which is connected to said processing device, and which presents, upon the generation of said characteristic position, on a viewing screen, on a display illustrating at least partially the environment of said first moving object, said position indication which is situated at said characteristic position; and a triggering device that triggers the implementation of at least one measurement by said measurement device, wherein said processing device determines, as a characteristic position, a fixed position which no longer displaces onward at the instant generated and which corresponds to a particular geographical position related to a trajectory of said second moving object, wherein said measurement device comprises a third element which is configured to measure, at a same instant as said first element, a relative position between said first and second moving objects, and wherein said processing device determines said fixed position, on the basis of said first position measurement and of said measured relative position.

2. The system as claimed in claim 1 , wherein said triggering device is configured to periodically trigger the measurements carried out by said measurement device.

3. The system as claimed in claim 1 , wherein said triggering device comprises an interface device arranged on said second moving object and allows an operator to produce at least one triggering order for triggering the measurements carried out by said measurement device, and wherein said system further comprises a transmitting device that transmits data between said first and second moving object to transmit said triggering order to said-first moving object.

4. The system as claimed in claim 1 , further comprises a recording device that records said fixed position determined by said processing device.

5. A system for displaying on a first moving object, a position indication dependent on a position of a second moving object, said system comprising: a measurement device carrying out at least one position measurement and arranged exclusively on the first moving object, said measurement device comprising a first element configured to carry out a first position measurement, corresponding to the actual position of said first moving object; a processing device mounted on said first moving object and connected to said measurement device, said processing device determining a characteristic position which is fixed; a display device mounted on said first moving object, which is connected to said processing device, and which presents, upon the generation of said characteristic position, on a viewing screen, on a display illustrating at least partially the environment of said first moving object, said position indication which is situated at said characteristic position; and a triggering device triggering the implementation of at least one measurement by said measurement device, wherein said processing device determines, as a characteristic position, a fixed position which no longer displaces onward at the instant of generation and which marks specific points of a trajectory and corresponds to at least one of a drop point, a start of descent or start of climb point, an objective point for search or rescue operations, and a change-of-trajectory point, wherein said measurement device comprises a third element which is configured to measure, at a same instant as said first element, a relative position between said first and second moving object, and wherein said processing device determines said fixed position, on the basis of said first position measurement and of said measured relative position.

6. The system as claimed in claim 1 , wherein the first moving object is a first aircraft and the second moving object is a second aircraft.

7. The system as claimed in claim 5 , wherein the first moving object is a first aircraft and the second moving object is a second aircraft.

8. The system as claimed in claim 1 , wherein the characteristic position remains in a same viewing position on the display device.

9. The system as claimed in claim 5 , wherein the characteristic position remains in a same viewing position on the display device.

10. A system for displaying on a first moving object, a position indication dependent on a position of a second moving object, said system comprising: a measurement device that carries out at least one position measurement, said measurement device comprising a first element which is arranged on said first moving object and which is configured to carry out a first position measurement, corresponding to the actual position of said first moving object; a processing device mounted on said first moving object and connected to said measurement device, said processing device determining a characteristic position which is fixed; a display device mounted on said first moving object, which is connected to said processing device, and which presents, upon the generation of said characteristic position, on a viewing screen, on a display illustrating at least partially the environment of said first moving object, said position indication which is situated at said characteristic position; and a triggering device that triggers the implementation of at least one measurement by said measurement device, wherein said processing device determines, as a characteristic position, a fixed position which remains in a same viewing position on the display device from the instant generated and which corresponds to a particular geographical position related to a trajectory of said second moving object, wherein said measurement device comprises a third element which is arranged on said first moving object and which is configured to measure, at a same instant as said first element, a relative position between said first and second moving objects, and wherein said processing device determines said fixed position, on the basis of said first position measurement and of said measured relative position.

11. The system as claimed in claim 10 , wherein said triggering device is configured to periodically trigger the measurements carried out by said measurement device.

12. The system as claimed in claim 10 , wherein said triggering device comprises an interface device that is arranged on said second moving object and that allows an operator to produce at least one triggering order for triggering the measurements carried out by said measurement device, and wherein said system further comprises a device for transmitting data between said first and second moving object to transmit said triggering order to said-first moving object.

13. The system as claimed in claim 10 , further comprising a recording device recording said fixed position determined by said processing device.